"It is the best way for bringing testimony in the right way or to fear both of them that the oaths of others may be brought instead of their oaths, and you heed Lord Allah and you listen, Allah doesn’t guide the transgressing people".
This verse revealed during Messenger's time in Medina contains rules and regulations that should be maintained when there is a group of believers. Today, there is no group of believers anywhere in the world and Adhikr is codified as the Safeguard against all calamities, disasters, diseases, and Hell. So the odd believer who holdfasts It shouldn't affect an unexpected death as explained in verse 5: 28. Whoever is not judging in his individual, family, and social life with Adhikr, is the wrongdoer, disbeliever, and transgressor as explained in verse 5: 42.
It is told in verse 64: 16: “You fear Lord as much as you can, you listen to verses carefully and you obey It, and you spend in charity for your soul, whoever saved from the covetousness of his soul, those are the only successful”. Verses 9: 24, 80; 24: 55; 61: 5, and 63: 6 also end as: "Those who knowingly hide the Book which contains the rules and regulations of the Lord for the entire mankind, the Lord will not guide such transgressing people". The believer is commanded not to take anyone from the Arabic Quran reading Fujjar who reject Adhikr as his patron as explained in verse 9: 23. And it is told in verse 4: 144: "Oh, you who believed! You shouldn’t choose disbelievers as your patrons besides believers. Are you intending to give Lord a manifest authority against you?". See explanation 2: 6-7; 3: 145; 5: 49, and 7: 102.